Discovering Average Value in AP Calculus

I saw this tweet ages ago and it's been screenshot and sitting on my desktop for almost a year.

Had a poppin' lesson in calculus today demonstrating the #MeanValueTheoremforIntegrals! #popcornkernels #calculus #rhscalculus #iteachmath #RISDGreatness pic.twitter.com/Cqk3vIEz9T

— Nicole Lalanne (@NHLalanne) January 30, 2018

Before teaching average value this year, I say down to recreate it as best I could.  A few people asked me for it, so I shared my file below, but all credit goes to Nicole Lalanne for this one!

Average Value Discovery Activity

Also, if I could do it again, I'd use split peas or something else that is flat. Even my always responsible and mature AP kids couldn't keep popcorn kernels from rolling all over the classroom at some points (despite their ingenius pencil trick seen below).

Let me know if you make any modifications to it! I'd love to know any and all tweaks we can make!